Here is the full list of all 49 Hades achievements. It takes around 80-100 hours to unlock all of the achievements on Windows.
Reach the epilogue of the story
Unlock all Weapon Aspects
Fulfill the 'Night and Darkness' Prophecy
Purge a Legendary Boon
Clear Elysium with the 'Extreme Measures' Condition
Fulfill the 'Musician and Muse' Prophecy
Get 30% bonus damage with the Pierced Butterfly
Get 20% dodge chance with the Lambent Plume
Earn all Chthonic Companions
Earn a Loyalty Card
Max-rank each standard Keepsake
Fulfill the 'Divided by Death' Prophecy
Trade 20 times with the Wretched Broker
Fulfill the 'Slashed Benefits' Prophecy
Fulfill the 'End to Torment' Prophecy
Buy 9 'Well of Charon' items in one escape attempt
Beat Thanatos by 15 kills or more
Earn the second of Skelly's prizes
Fulfill the 'War-God's Bloodlust' Prophecy
Unlock each standard Keepsake
Complete the main quest in the story
Catch a fish from each region
Fully Unlock the Olympians' Codex entries
Pet Cerberus 10 times
Use an Olympian's Greater Call against them in a Trial
Choose 50 different Daedalus Hammer enchantments
Clear an escape attempt with a hidden Weapon Aspect
Clear an Infernal Gate without taking damage
Fulfill the 'Dark Reflections' Prophecy
Use Greater Call to invoke an Olympian's aid
Slay Skelly 15 times
Have at least one rank in each Mirror of Night Talent
Earn the first of Skelly's prizes
Unlock each of the Infernal Arms
Earn access to and enter the Administrative Chamber
Clear Tartarus
Clear Elysium
Compel Orpheus to sing again
Clear an escape attempt
Forge a bond with any character
Pay for 50 jobs from the House Contractor
Fulfill the 'Master of Arms' Prophecy
Fulfill any 15 Prophecies
Fulfill the 'Harsh Conditions' Prophecy
Choose 100 different Olympian Boon effects
Max any Weapon Aspect
Fulfill the 'Chthonic Colleagues' Prophecy
Clear Asphodel
Equip a Chthonic Companion